MMJ=Modified Modular Jack
Invented by Digital Equipment Corporation (DEC) (now: Compaq)
 (at the devices)
 (at the devices)
 (at the cables)
 (at the cables)
MMJ FEMALE CONNECTOR at the devices.
MMJ MALE CONNECTOR at the cables.
| Pin | Name | Description | 
|---|---|---|
| 1 | DTR | Data Terminal Ready | 
| 2 | TXD+ | Transmit Data + | 
| 3 | TXD- | Transmit Data - | 
| 4 | RXD+ | Receive Data + | 
| 5 | RXD- | Receive Data - | 
| 6 | DSR | Data Set Ready | 
| Contributor: | Joakim Ögren | 
| Source: | ? | 
  Copyright © The Hardware Book Team 1996-2004.
  May be copied and redistributed, partially or in whole, as appropriate.
  Document last modified: 2002-01-10